Gruff

Hello,

I used gruff library to display some of bar charts.
It works fine but Gruff API documentation does not explain much like
java api.
So if I wanted to try some features like spacing between two bars, 3-D
graph.
It may be features available in Gruff library, but it is not well
documented, I guess.
Helpful resources would be appreciated.

Thank You.

Dakshesh